Miss Mermaid

After being spotted at a hotel, Soo Jung's future in-laws, Sil Ra and her mother-in-law, Ok Sun, suspect that Soo Jung is having an affair. Meanwhile, Ju Wang loses his wallet while shopping with Ye Young. When he goes to retrieve his wallet, the two of them find Ma Rin, who has a secret crush on Ju Wang, waiting for them there.

A Ri Young is an up-and-coming TV writer who wants to get revenge on her father, who had abandoned her and her mother for Sim Soo Jung when she was still young. To put her plan into motion, she tries to cast Soo Jung in the main role for her new drama, \"The Joy of Love.\"

A Ri Young wants to find out who her half-sister Ye Young's fianc\u00E9 is as a part of her revenge plan. Ye Young, oblivious to her family's history, wants to interview A Ri Young, who is working under the pen name, Eun A. Soo Jung declines the offer to play the main role in A Ri Young's new drama. Overhearing her conversation, Jin Sub suspects that Eun A might actually be A Ri Young.

Sung Mi suspects that Ye Young's fianc\u00E9 is someone she knows after asking her and tells A Ri Young. Ye Young is upset when Ma Rin interrupts her date with Ju Wang. Ma Rin pretends to be drunk to get Ju Wang's attention, making Ye Young suspicious of her friend.

Having found out who Ye Young's fianc\u00E9 is, A Ri Young contacts Ju Wang and tells him that she needs to interview a reporter for the new drama she's working on. Meanwhile, Sung Mi meets Hye Ri, her cousin who works at a boutique, and learns that Soo Jung is a regular at the boutique Hye Ri works in. Sung Mi tells Hye Ri about Soo Jung's past, and Hye Ri is left appalled.

A Ri Young reveals to Ju Wang that Eun A is her pen name and asks him not to tell anyone that she is a TV writer. Having heard from Hye Ri that Kyung Hye and A Ri Young are in Korea, Su A attempts to get in contact with the two. However, A Ri Young is unsure about meeting her to keep her identity a secret.